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Illinois River Timeline, 1673 to the Present People and the River Human actions have caused dramatic changes in the Illinois River valley. In the last 200 years, the Illinois River has been deepened, dammed, contained by
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Document Date: 2008-02-25 15:33:12
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Illinois River Timeline, 1673 to the Present People and the River Human actions have caused dramatic changes in the Illinois River valley. In the last 200 years, the Illinois River has been deepened, dammed, contained by